Ton of hexagons, in another hexagon, in a honeycomb pattern.

You can pack a lot of bits tightly or just line them up in a straight line, based on orientation.

I made this because I had bit kits where handle or the box was gone or low quality. Rather than tossing all bits in a small container, I can see all of them in one place now.

I'm adding multiple sizes STL. 100p (100%) size will definitely be loose for your bits, 94p is just fine for the ones I have. I added a tiny slice of tester print at 100p size. Resize tester uniformly down to 95p and give it a try before printing the actual item.

You could probably slice even tinier tester using Meshmixer so you will know exact % which is good for your taste. Tester can be printed without getting knocked off the bed and it takes about 10 minutes for me.

I'm guessing any layer height will be fine as long as you use same layer height to test the fit.

You can see a short video on my Instagram post. Please follow if you like it :)

https://www.instagram.com/p/CIxuBdErnSa/?igshid=1ufvjd7s2uicv

New Instagram post, it fits collet bits:

https://www.instagram.com/p/CLMOxfcLiYe/

Update: New version (v4) added. It has a deeper counterpart which can be used as a cover or deep bit holder for screwdrivers itself. They can stack on each other with magnets or they can repel each other with magnets. See my Instagram video: https://www.instagram.com/p/CLOr58LLOlG/

Update, x-posting: %161 scaled version fits large hex bits, see example https://www.instagram.com/p/CL0rxQ_LCAR/